Consider the following sequence of four reactions. 
Answer the following question using the number of the appropriate reaction. More than one reaction may be applicable to a given question. You need only enter one reaction.
-The reaction that is identical to a reaction in the cycle by which CFCs destroy ozone is reaction________.
Definitions:
Fritsch and Hitzig
Pioneers in neurophysiology, known for their research demonstrating that electrical stimulation of certain parts of the dog's brain resulted in muscular contractions on the opposite side of the body.
Auditory Stimulation
The process of inducing a response through exposure to sound, affecting perception, emotions, or cognitive functions.
Temporal Lobes
Regions of the cerebral cortex located beneath the temples, involved in processing sensory input and assigning it emotional meaning.
Occipital
Pertaining to the occipital lobe of the brain, which is primarily involved in visual processing.
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